update tests for multiple hook calls

test/test_config.rb

@@ -366,13 +366,17 @@ def assert_run_hooks(hook_name, options = {})
     messages = []
     conf = Puma::Configuration.new do |c|
       c.send(configured_with) do |a|
-        messages << "#{hook_name} is called with #{a}"
+        messages << "#{hook_name} is called with #{a} for one block"
+      end
+
+      c.send(configured_with) do
+        messages << "#{hook_name} is called without an arg for another block"
       end
     end
     conf.load
 
     conf.run_hooks hook_name, 'ARG', Puma::Events.strings
-    assert_equal messages, ["#{hook_name} is called with ARG"]
+    assert_equal messages, ["#{hook_name} is called with ARG for one block", "#{hook_name} is called without an arg for another block"]
   end
 end